IS 4151: Protective Helmets for Motorcycle Riders--Specification (Third Revision)

24 Pages·1993·1.9 MB·English

by  Bureau of Indian Standards (BIS)

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 4151 (1993, Reaffirmed 2008): Protective Helmets for
Motorcycle Riders--Specification (Third Revision). UDC
614.891 : 629.118.6
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

(Reaffirmed 2008)
IS 4151:1993
REAFFIRMED 2008
ifJcxxil~Rhe'1 ille'1Cb'i cf> ~ x:Ra?r g~c
(dlffl7 ~)
Indian Standard
PROTECTIVE HELMETS FOR MOTORCYCLE
RIDERS - SPECIFICATION
(Third Revision)
Second Reprint JANUARY 2006
( Including Amendments No. 1 and 2 )
UDC 614.891: 629.118.6
© BIS 1993
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
October 1993 Price Group 8
AMENDMENT NO. 1 SEPTEMBER 1998
TO
IS 4151 : 1993 PROTECTIVE HELMETS FOR MOTOR. .
CYCLE RIDERS - SPECIFICATION
( TIUnI Rnislott)
( Page 2, cl4u.se 5.1 ) - Substitute the following for the existing:
5.1 'Helmell ,ball be of the siztS matcbing to the aiza of beldfom of SOO, S20,
540,560,570,580,600 and 620 mm in accordance witb IS 7692 : 1993.'
( Page 3, clQu~ 6.3 ) - Substitute tbe foJlowing for tbe cxi$ting:
'The protective padding sball cover III the areal above plane AA (Fig. 2A).'
( Page S, clause 6.6 ) -Insert at tbe end of clause:
'except clauses 504.3, SA.4 and 5.4.5
NOTE - Ie shall be reviewed late' Oil wb •• _lin, racilities would be developed .l1li
made .".ilabJe ill Jodi •. '
(CEO 22.)
Prinlod at Now india Printing Prellt, Khurja. India
AMENDMENT NO. 2 JANUARY 1m
TO
IS 4151 : 1993 PROTECTIVE HELMETS FOR MOTOR·
CYCLE RIDERS - SPECIFICATION
( TlaW R.Yision )
(Page 14, Fig. 7 ) - Substitute the following figure for existing figure:
I
\II ,1 Wt1I1ITl.I DW '"
.J IftIII •
• [FRAME
"'" 1" "'.""
---"-fALLINO
100-
J
r
• tIt-
AFtlER 'HE tut
SECtiON A-A
NOTB -1'IU. lieu" irac:orpol'1lle1 rectifacaboD tor cypoppbial error jill dimeuioili.
FIo. 7 RE'rENnON TEsT APPARAnJS
(CED22)
Printed at New India Printina Pr .... Khwja, India
Fire Filbting Sectional Committee, CED 22
FOREWORD·
This Indian Standard ( Third Revision ) was adopted by the Bureau of Indian Standards. after the draft
finalized by the Fire Fighting Sectional Committee had been approved by the Civil Engineerinl Division
Council.
Helmet is one of the most important items of personal protective equipment used by motorcycle riders
for protection against the hazards connected with driving on roads. This standard has been framed to
cover provisions of protective helmets for everyday usc by the motorcycle riders.
The protection given by wearing of the helmets for which requirements have been laid in this standard
is not complete and wearing of the helmet may not prevent injury and/or death in severe accidents.
This standard was first issued as an emergency Lndian Standard in 1961 (made as firm in 1968) and
subsequently revised in 1976 and 1982. This revision has been taken up on the basis of experience gained
during these years and to bring in line with latest thinking at international level, such as European
regulations ( EEC regulation No. 22.03 ) and proposed draft reVision of ISO/DIS 1511. The principal
modifications inclu~ed from point of view of added safety arc:
a) Sho~k absorption test based on deceleration criteria.
b) New tests for chin guard and for effectiveness of the retention system.
c) Inclusion of side impact test under various conditions of temperature and humidity.
d) Allowance for ventilation of the head, while wearing the helmet.
However, the requirements for headform arc given in IS 7692 : 1993 'Specification for wooden head.
form for testing of helmets' matching with the requirements given in EEe regulation No. 22.03 and
ISO/DIS 6220 'Headforms for use in the testing of protective helmets',
The committee responsible for preparation of this ~tandard is given at Annex J.
For the purpose of deciding whether :l particular requirement of this standard is complieJ with, the final
value, observed or calculated, expres3ing the result of a test or analysis, shall be rounded oil' in accot"
dance with IS 2 : 1960 ' Rules for rounding off' numerical valutl ( rnbtd) t. The number of significant
places retained in the rounded off value should be the same as tbat of the specified value in tbi~
standard.
IS 41!1 : 1993
Indian Standard
PROTECTIVB HELMETS FOR MOTORCYCLE
RIDERS - SPECIFICATION
( Third Revision )
1 SCOPE detachable side car having an extra wheef,
attached to tbe motor vehicle.
1.1 This standard lays down the req\!irements
reprdina material. construction, workmanship, 3.2 ProtectIve Helmet
finish, mass and performance for protective
helm.ets ( with or without lower face cover) for A helmet primarily intended to protect the
everyday use by motorcycle riders. wearer's head against impact.
1.2 The helmets covered by this standard are 3.3 SIMU
not intended for hiab speed competitive events.
The hard part of the protective helmet which
gives it its general shape.
2 REFERENCES
3... Protectbe PacI.'. .
The Indian Standards listed in Annex A arc
necessary adjuncts to this standard. A material used to absorb impact energy.
Pad".,
3 TERMINOLOGY 3.5 Comfort
3.0 For the purpose of this standard, the follow A material provided for the wearer's comfort.
ing definitions shan apply ( see Fig. 1 ).
3.6 Reteotioll System
3.1 Motor Cycle
The complete assembly by means of which the
A two wheeled motor vehicle, inclusive of any helmet is maintained in position on the head,
PROTECTIVE
PADDING
..
.~.~
NECK CURTft,IN I
RETENTION SYSTEM
(CHIN STRAP)
FIG, 1 A TYPICAL SKIiTCH SHOWING INTBRNAL COMPONENTS OF HELMET
1
IS 4151 : .993
including any de vices for adjustment of the 3.15 Neck e.tala
system or to enhance the wearer's comfort.
A part of the helmet attached to the lower edae
3.6.1 Headband of the helmet desiped. to protect apbllt adftl'lO
weather condhions, dirt and small stones.
Part of retention system in contact with and .. MATERIAL
surrounding the head.
4.1 ShU
3.6.2 Chin Strap
The shell of the helmet shaH be of non-metallic
A part of the retention system consisting of a materials conforming to tbe test requirements
strap that passes under the wearer's jaws to keep siven in 4.5 and 9.1.
the helmet in position. 4.1 Protective Pa.d. ...
3.6.3 Chill CliP It shall be of expanded polystyrene or any other
material ha vin, similar properties.
It is an accessory of the ~hin-strap tlklt fits
round the point of the wearer's chin. / 4~3 Comfon P84ItUDI
3.7 Peak I t shall be of expanded polyuretbel1c foam,
polyethylene or any other suitable material
It is an extension of the shell above the eyes.
having similar properries.
3.8 Lower Face Conr
4.4 Retcatio. SJltem
A detachable or integral part of the helmet
Tne criteria for selection of material (or chin
covering the lower part of the face.
strap and headband shall b~ sweat-resistant, non
3.9 Visor irritant and shall not be known to cause skin
disease.
A transparent protective screen extending over
the eyes and covering part of the face. 4.5 Metal Parts
3.10 Goggles The metal parts in helmet shall be either inhe
rently eurrosion resistant or shall have been
Transparent protectors that enclose and cover' trealed for corrosion resistance. Such parts shall
lhe ~yes. show no sign of corrosion when subjected to
test as specified in IS 9844 : 1981.
3.11 Basic Plane of the Human Head
4.6 Visor
A phlOe at the level of the opening of the exter·
nal auditory meatus ( external ear opening) and The criteria for selection of materinl for visor,
the lower edge of the orbits (lower edge of the if provided, shall be in accordance with
eye sockets ). IS 9973 : 1981.
3.n Basic Planc of the Headform 5 SIZES
A plane which corresponds to the basic plane of ~.1 Helmets shall be of the sizes matching to the
1 he human head. 5sl6t.:0C,S o5f7 0h,e a5d8f0o,r m5 9o0f. SO6O0,0 ,5 1601, 05,2 06, 2503,0 , 653400 , 5a5n0d,
640 mm in accordance with IS 7692 : 1993.
3.13 Central Vertical Axis
6 CONSfRUCTIONAL REQUIIlEM~TS
The line rdati ve to human head or headform or
belmet that lies in the plane of symmetry, and
6.\ (;eatf• •
tbat is normal to the basic plane at a point
equidistant from the front and back of the head
6.1.1 The basic construction of the helmet shall
Othr atth es ihmeaudlaftoersm tohre ( fhoer ahde lmtheat)t otfh teh e hheelmadefto rmis be in the form of I. hard outer sbell contaminl
additional means of absorbing impact enersr and
intended to fit ( Fig. 3.8 ).
a retention system.
3.14 Refereace Plalile
6.1.1 The protective helmet may be fitted with
A construction plane paraUel to the basic plane ear Haps and a neck curtain. It may also have a
of the headform at a distance 1from it which is a detachable peak, a visor and may also have a
function of the size of the headform. lower face cover.
2
IS <CIS. : 1993
6.U No compoocnt or device shall be fitted to 6..l.' There shan be no inward-facing sharp
or incorporated in the protective helmet unless edges on the inside of the helmet. Ri,id project
it il desiped io such a wa'! that it shan not ioS internal parts shall be covered With paddiog
ca:ue injury and tbat. when It' is fitted to or so that any stresses transmitted to the head are
iDcorporatcd in the protective helmet. the not highlY concentrated. Rivet heads shall be
helmet still complies with the requirements of radiuscd and shan not project more than 2 mm
tbia standard. above the internal surface of the shell.
6.IA The characteristics of the materials used in 6.2.7 The components of the helmet which are
the manufacture of helmets shall be known not intended to protect the head of the user shan be
to underao appreciable alteration under the assembled such that they may not become easily
influence of agelng~ or of the circumstances of detached or move under the conditions of the
use to which the helmet is normally subjt:cted, test as specified in 9.1.
such as exposure to sun, extremes of temperature
and rain. For those parts of the helmet coming 6.3 Protecthe Paddlog
into contact with the skin, the materials used
The protective padding shall cover aU the areas
should be known not to undergo appreciable
defined in 6.2.1 taking into account the require
alteration through the effect of perspiration or
of toilet preparations. The materials known 10 ments given in 6.1.3.
cause skin troubles should not be used.
6.4 RetentioB System
6.2 Shell
The helmet shallbe held in place on the wearer's
The extenl of the protection provided shall be as head by means of a retention system which is
given in 6.1.t to 6.1.7. secured under the lower jaw and is firmly attach.
ed to the shell.
6.1.t The shell shall cover all areas above pJane
AA and shan extend downwards at least as far 6.4.1 Chin Strap
as tbe lines CDEF on both sides on the head
The strap shall not be less than 20 rom wide
form (ue Fig. 2A ).
under a load of ( 150 N ± 5 ) N applied under
6.2.1 At the rear, the rigid parts and, in p.uti. the conditions given in F· t.2.
cu1ar. the shell shall not be within a cylinder of
diameter 100 mm, with axis situated at the inter 6.4.2 The chin strap shall not include a chin
cup.
section of tbe medium plane of symmetry of the
headfonn and of a plane parallel to and 110 mm 6.4.3 The device to open the retention system
below the reference plane ( see Fig. 2B ). shall not be capable of opening other than as a
6.2.3 The helmet shan not dangerously affect the result of a deliberate act. In the case of a press
fastener opening device, the press-fastener shall
wearer's ability to hear and shall conform to the
be recessed. that is. the surface to which the
requirements laid down sn 9.5. Ventilatton may
be provided for increasmg the comfort of the pressure is applied shall be fitted with a fairing
about its whole periphery so that opening does
rider. The outer surface shaH be perfectly
smooth. Above the reference plane, the shape not occur when the surface is pressed with a
sphere of 100 mm diameter.
shall be in the form of a continuous, convex
curve. except where shaping is provided for 6.4.4 Tbe retention of the helmet on the head
functional purposes. Below the reference plane. by the retention system shall be verified when
irregularities in the curve shall be smoothly the test described in 9.6 is carried out. When a
faircd. The shell shall not incorporate an integral helmet subject to the test shall be that present·
peak, but may incorporate in integral lower face ing the least favourable conditions (such as the
~over. Where means for attaching a visor are not thickest padding, etc. ).
provided, the profile at the front edge shall not
prtvent the wearing of goggles. 6.S Peripheral Vision
6.2.4 There shall be no external projections 6.5.1 The helmet shall be placed on the head
sghree ant.e Wr thhearne 5a mgomg galbeo fvitet inthge iso upteror vsuidrfeadc ea ot f tthhee sfoizrem b (y Hthte I Spr 1o6c9e2d u: r1e9 a9s3 s)p eccoifrireeds pionn Adinnnge xto B .i ts
rear of the helmet and is designed to be detach
able, this requirement shan not apply 10 such a 6.5.1 in the conditions mentioned in 6.5.1, there
fittiDg. shall be no occultation in the field of vision and
shall satisfy the following requirements:
6.1.5 Any uteroal projections other than press
fasteners shall be smooth and adequately faired. a) Horizontally - Two segments of dihedral
Rivet heads shall be radiused and shall not pro anl Ies symmetrical in relation to the
ject more than 2 mm above the outer surface of median lonaitudinal vertical plane of the
the shell. headform and situated between the
3
II 41S1 : 19t3
\
y
~r--+---~I_
Et..$IC I
PLAt'(E~ --H+--
I---;"--+-CENTRAL
VERTICAL
,8 REAR
,
---j-~
2A FRONT
All dimcnsio;ls in millimelrcs,
HH4Ifon.l Slle X y AC HO
A ~OO :!4 /(1)'5 XO NN
C .520 ~,5 9.\ K2 90
E SolO :!(, 96 M-I 92
G .560 '!o7 CW N6 'J4
J 570 :!7',5 102'~ 1ol7 9$
K ,580 21'1 104 loiS 1)(,
I M (,()() ~9 107 90 98
0 620 30 110 92 100
Flo. 2 HBAD FORM
reference and the basic planes. Each of b) Upwards -" A ,dihedral angle defined by the
these dihedral angles is defined by lonai- reference plane of the headform nnd a
tudinal vertical median plane of the head- plane forming an angle of not Jess than 70
form and tbe vertical plane forming an with the reference plane and whose edle
angle of not leas than 105° with the meeJian is the straight line Lit La; the points Ll
longitudinal vertical plane and whole edge and L. representing the eyes ( ate Fig. ~A
is the straiaht line L K ( see Fig. 2A, 2B. and 38 ).
3A. and 3C).